> A petroglyph is a type of artwork made on which type of material?And the answer: stone. Photo credit: World Atlas[https://www.worldatlas.com/articles/what-is-a-petroglyph.html].A petroglyph isa rock carving, created by chipping away at the surface of the stone. Similarly,a pictograph is a rock painting, though petroglyphs tend to last longer, sincethe art is etched into the rock rather than produced on the surface. Some of theoldest examples of rock art are estimated to be 10-15,000 years old.Petroglyphs have been found all over the world. From caves in Europe to themountains of Siberia to the boulders of Africa[https://www.askqotd.com/petroglyphs/], these stone carvings are a form of humanexpression that transcend cultural boundaries. Some images are simple, anddepict an animal or herd, while some are deeply complex, and etch a story ontothe rock. Interpretation of these ancient carvings varies widely. Some petroglyph imagesmost likely held a deep cultural and religious significance for the societiesthat created them. Many others are thought to represent a type of symbolic orritualistic language or communication style that remains not fully understoodeven today. Susanna Villanueva, a park ranger at Petroglyph National Monument inNew Mexico, aptly describes[https://www.smithsonianmag.com/travel/eight-spots-in-united-states-where-you-can-see-petroglyphs-180972445/] the sensation of the petroglyphs: > "We look at these images and symbols from people who traveled through the RioGrande Valley [in southwestern United States] hundreds and even thousands ofyears ago, yet they seem so distant that it is easy to think that they don'tmatter. But when you hike along the trail and stand in front of a boulder withpetroglyphs, you realize that this used to be their world and it was just asalive to them as ours is to us. The Ancestors graciously reach out to us acrosscenturies through these petroglyphs to remind us that they do matter and thatthey are still connected to this world, to this landscape, and to us, foreternity.”In the United States alone, there are sites of petroglyphs in over 27 states,and far more worldwide. Check out some of the most notable U.S. petroglyphdestinations here[https://www.travelawaits.com/2474996/where-to-see-petroglyphs-united-states/].